Spool



G. D. ATWOOD Nov. 5, 1935.

SPO OL Filed Sept; 8, 1932 l gNTOR BY g ATTORNEYS' lTED STATES PATENT OFFICE SPOOL George D. Atwood, Brooklyn, N. Y.

Application September 8, 1932, Serial No. 632,110

3 Claims. (01. 242-423) This invention relates to improvements in flanged spools designed for receiving and holding tape-like materials which are wound upon the core of the spool-and unwound therefrom as portions thereof are required for use.

The spool of the present invention is designed particularly for use with surgical adhesive tape and will therefore be described with particular reference thereto. for such tape must be such as to protect the tape as far as possible from the impurities of the atmosphere and also from contact at its edges with the spool flanges, if they be of metal, as they commonly are.

The tape is so protected from the atmosphere partly by theflanges of the spool and partly by a shell or casing into which the spool is inserted and which may be open at both ends, in which cases the spool flanges serve as'closures for the ends of the shell or casing, or the shell or casing may have a closed bottom, in which case the spool flange at the outer end of the spool serves as a.

closure for the other end of the shell or casing.

The spool of the present invention is designed for use with such a shell or casing although the invention is not to be limited to use therewith.

Another requirement of spools of the kind referred to is that they shall be cheap to manufacture in cost of materials and labor as they must be sold at very low prices.

In the accompanying drawing- Figure l is a longitudinal section on an enlarged scale of a spool embodying my invention with parts thereof ready to be assembled, and

Figure 2 is a like view of the completed spool.

The spool there shown consists of a tubular sheet metal core I on which the tape 2 is wound and two annular flanges 3. The core is made from a sheet metal blank rolled to tubular form and. having its ends bent inward to form heads 4. A number of these are then mounted end to end on a mandril and a sheet of tape is then wound upon the several cores to a predetermined length and this material is then severed between the cores. r

The function of the beads 4 is that of cooperating with the flanges 3 for the purpose of locking them to the core. For this'purpose the flanges,

Spools and other receptacles which are of sheet metal, have stamped up hubs 5 which are slit at their innermost ends 6 and when the flanges and core are assembled, these ends of the hubs 5 are bent outwardly under the beads 4 of the core so as to interlock therewith and 5 thereby hold the flanges in proper position on the core, as shown in Figure 2.

Above the slit or serrated ends 6 of the hub 5, shoulders l are provided which when the flanges are interlocked with the heads 4 rest upon the 10 beads 4 so that the edges of the tape do not come in contact with the flanges and therefore are not contaminated or otherwise injured by the metal thereof.

What I claim is: 15 1. A spool for tape-like material comprising a sheet metal core on which the material is to be Wound and sheet metal flanges at the ends thereof, the core being provided with inwardly extending slit beads at its ends and the flanges with 20 downwardly extending hubs having their lower ends slit endwise and bent outwardly under and into locking engagement with the beads to prevent relative rotative and endwise movement of the flange and core. 25 2. A spool for tape-like material comprising a sheet metal core on which the material is to be wound'and sheet metal flanges at the ends thereof, the core being provided with inwardly extending slit beads at its ends and the flanges with 30 downwardly extending hubs having their lower ends slit at various points and bent outwardly under andinto locking engagement with the beads to prevent relative rotative and endwise movement of the flange and core. 35 3. A spool for tape-like material comprising a sheet metal core on which the material is to be wound, and sheet metal flanges at the ends thereof, the core being provided with inwardly extending slit beads at its ends, and the flanges being 0 0 provided with downwardly extending hubs having their lower ends slit at various points endwise and bent outwardly and under the slit beads of the core and. into interlocking engagement with the slits in the beads, thereby/preventing endwise 45 relative and rotative movement of the flanges and core.

- GEORGE D. ATWOOD. 

